book anxiety

i have such a soft spot for anything classic, so when i spied this houndstooth fabric in the store, i just had to have it.  i thought it would be perfect for this book, which was bound using a "quarter binding" (it's called a quarter binding because one quarter of the cover is bound using bookcloth...except for this book i used black leather).  this is my first quarter binding and i love the way it looks...except for one major thing.  

when i finished binding the book, i noticed that the fabric seems to be crooked just at the top and bottom.  if you look at the front edge of the book, and where the leather meets the fabric, the pattern of the fabric is straight.  if the sides are straight, how then can the pattern be crooked at the top and bottom?!  do you think it was just printed that way?   do things like this really bother you too, or is my type-A personality just rearing its ugly head?  the irony of it is that i really like the book...it's just that now my eye goes straight to the crookedness of the fabric every time i look at it!  well, i'll wait to hear your opinion before i judge it any further...please let me know what you think about this!